Here is a Chan story discussing impermanence and permanence of enlightenment.

A monk asked Dasui: "When the great fire at the end of the aeon rages through, and the whole universe is destroyed, is this destroyed or not?" Dasui said: "Destroyed." The monk asked: "Then it goes along with that?" And Dasui said: "It goes along with that."Later, a monk asked Longji the same question: "When the great fire at the end of the aeon rages through, and the whole universe is destroyed, is this destroyed or not?" Longji said: "Not destroyed." The monk asked: "Well, why is it not destroyed?" Longji said: "Because it’s the same as the universe."

"There is no such thing as the real mind. Ridding yourself of delusion: that's the real mind."(Sheng-yen: Getting the Buddha Mind, p 73)

asunthatneversets wrote:The goal of most vehicles can be said to be aiming at a glimpse of cessation and/or total cessation. However the cessation is the cessation of ignorance which arises from identifying with a personalized view of reality. The fact that we take ourselves to be individuals who were born, exist in time and eventually die is ignorance(avidyā) according to buddhism. The proliferation and evolution of ignorance is the cycle of samsara, and the Dharma is the method to transcend samsara, thus reaching nirvana. So while I wouldn't call it a "cessation of existence" per se, it is the cessation of everything which could be considered "you". I suppose the absence of individual 'being' can be perceived/interpreted as some sort of non-existence to those unfamiliar and possibly intimidated by such a notion. But the state of cessation is in fact your natural and true state of being, beyond birth and death... abiding in this state is buddhahood a.k.a. wisdom(vidyā). That state is beyond the 4 extremes which are (i)existence, (ii) non-existence, (iii) both existence and non-existence, (iv) neither existence nor non-existence.

Well, I don't want to get involved in a debate about whether "enlightenment" (whatever that is) is permanent or not.So I'll just ask this question:If you DO reach an "enlightenment" and find Nirvana/Nibanna...then where/when/what are you?

And more importantly, once you are "enlightened"..... What's the next step?

Personal opinion here....but if you or I ever did reach that state of "enlightenment"....I very much doubt our previous lives would suddenly end.Nor do I ever epect (if I was ever to become "enlightened") to have roses strewn in my path, and people falling down to praise my "spiritual" virtue.In fact, the next day...after our "enlightenment" would be it not seem to be very much like the day before?Maybe WE would be different....but the world will still regard us as appearing to be exactly what we appeared to be the day before.And living in that world....wouldn't we still be subject to impermanance and the emptiness of all "compound" objects?

So, I ask that crucial question again...."Okay, but WHAT NEXT?"

And no, I'm not claiming to even be close to enlightenment.

Shame on you Shakyamuni for setting the precedent of leaving home.Did you think it was not there-- in your wife's lovely face in your baby's laughter?Did you think you had to go elsewhere (simply) to find it? from - Judyth Collin The Layman's Lament From What Book, 1998, p. 52 Edited by Gary Gach